Process of refining oil.



PATBNTBD JULY 7, .1903. c. B. GRAHAM.

-- PROCESSO? REFINING 011.. PPLIOATVIONILED DEU. 23, 1902.'

mt Nom-us usas co., umg-Limo., wANINuTuN, D. c,

CHARLES BOOTHROY GRAHAM,

Patented July 7, 1903.

PATENT OFFICE.

OF SOUTH HAVEN, MICHIGAN.

PROCESS OF REFINING OIL.

SPECIFICATION formingpart Cf Letters Patent No. 32,937, dated July 7,1903.

Application led lJecember 23, 1902.

. To @ZZ whom it may concern.:

Be it known that I, CHARLES BOOTHROY GRAHAM, a citizen of the UnitedStates, and a resident of South Haven, county of Van Buren, StatepfMichigan, have invented a new l and useful Improvement in Processes ofPurifying Oil, of which the following isa full, clear, and exactdescription, reference being had to the accompanying drawing, makingpart of this specification. l

My invention is an improved process of purifying petroleum to adapt itfor use for heating and lighting purposes; and it consists in passingthe petroleum through acompound of lime-water, pyrogallic acid,` andcaustic potash, as hereinafter described and claimed.

The accompanying drawing is a sectional view of a heating-stove providedwith a burner and a purifying apparatus adapted for operation inaccordance with my improved process.

In the apparatus shown there is provided l a generator 1, which istubular or of other asbestos.

suitable form to provide a channel in which oil as it passes isconverted by heat to vapor. This generator may in practice be filledwith It is also provided with asuitable number (one or more) of jet-tipsfor the escape of the vapor therefrom and to supply vapor to the flameor flames. These jet-tips are indicated at 2.

At a suitable distance below the generator 1 is an initial burner 3,which may be of any `suitable construction and in which oil is ignitedfor initially heating the generator and also for maintaining thegenerator at such heat as to vaporize oil therein. The generator is hereshown as provided with suitable suppporting-legs 4, and the initialburner is shown as suspended from and supported by the generator.

A suitable oil-reservoir 5 is supported, as shown,` or by other suitablemeans, in an elevated position. An oilfeed fpipe 6 leads from thereservoir `to an oil-purifying tank Serial No. 136,365. (No specimens.)

7, which is provided at its upper side with a suitable opening S, havinga closure 9, here shown as a screw-cap, and has a valved noz- Zle 10 atits lower side for the discharge of its contents. In the pipe Gis avalve1l to regulate the supply of oil to the purifying-tank. Said pipe Gcommunicates with the purifying-tank near the lower side of the latter.

The purifying tank is supported by a bracket 12, which projects from oneend of the'stove. A pipe 13, having a valve 14, leads from thepurifying-tank at a suitable dis tance from its upper end to the initialburner 3 to supply the latter with oil. A pipe 15, having a valve 16,connects the said tank with the generator 1.

`In the purifying-tank is placed a suitable quantity of a cleansingmedium, such as lime-Water, eighty parts; pyrogallic acid, ten parts,and caustic potash, ten parts. The oil fed from the pipe 6 to the lowerportion of the purifying-tank rises through the body of the cleansingcompound or cleansing medium therein and becomes freed of sulfurous andother deleterious constituents by the action thereof before reaching theburner, and hence the oil is caused to burn freely without smoke,without odor, and to produce a clear flame of great heating andilluminating power.

Having thus described my invention, I claim- The herein-describedprocess of purifying oil, consisting in passing the same through acompound of lime-water, pyrogallic acid and caustic .potaslL Intestimony whereof I have set my hand, this 9th day of December, A. D.1902, in the presence of two attesting Witnesses.

CHARLES BOOTIIROY GRAHAM.

